Proper exercise is good for your health._____, too much is bad for it.
| A．Therefore | B．But | C．However | D．while |
Would you be __ kind as to lend me a hand?
| A．as | B．very | C．so | D．too |
Of all the studetts, he prepares his lessons ___.
| A．most carefully | B．more carefully | C．much carefully | D．most careful |
---How old is your sister? --She is __ than I.
| A．older six years | B．six years older | C．six years elder | D．older by six year |
I don’t think English is __ a language as Russian.
| A．difficult as | B．as difficult | C．more difficult | D．difficult |
---Could you give me some ink? ---Sorry, I haven’t ___ left myself.
| A．few | B．little | C．many | D．much |